Tri-Rings Blue Set includes one each size: medium ring, large ring and x-large ring. The unstretched diameters are the following 1.75 inches, 2 inches, and 2.5 inches around. Do not wear a cock ring for more than 30 minutes. Cock rings give you a longer lasting erection by trapping the blood supply in the penis and intensify orgasms. Cock rings are ideal for men with premature ejaculation or erectile dysfunction. There are no guaranteed results from cock ring usage. Bulk weight 0.4 ounce. Safe and pure for body and pleasure. Made using phthalate free, non-toxic materials Rubber. Category: For Men, Rings & Sleeves, Rings. Tri-Rings is a registered trademark for California Exotic Novelties. Made in the USA. Sex toys and sexual wellness. New high resolution images added.